PMID- 16084645 OWN - NLM STAT- MEDLINE DCOM- 20051021 LR - 20181113 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 387 IP - 2 DP - 2005 Oct 21 TI - Integration of engrafted Schwann cells into injured peripheral nerve: axonal association and nodal formation on regenerated axons. PG - 85-9 AB - Transplantation of myelin-forming cells can remyelinate axons, but little is known of the sodium channel organization of axons myelinated by donor cells. Sciatic nerve axons of female wild type mice were transected by a crush injury and Schwann cells (SCs) from green fluorescence protein (GFP)-expressing male mice were transplanted adjacent to the crush site. The male donor cells were identified by GFP fluorescence and fluorescence in situ hybridization (FISH) for Y chromosome. In nerves of GFP-expressing mice, GFP was observed in the axoplasm and in the cytoplasmic compartments of the Schwann cells, but not in the myelin. Following transplantation of GFP-SCs into crushed nerve of wild type mice, immuno-electron microscopic analysis indicated that GFP was observed in the cytoplasmic compartments of engrafted Schwann cells which formed myelin. Nodal and paranodal regions of the axons myelinated by the GFP-SCs were identified by Na(v)1.6 sodium channel and Caspr immunostaining, respectively. Nuclear identification of the Y chromosome by FISH confirmed the donor origin of the myelin-forming cells. These results indicate that engrafted GFP-SCs participate in myelination of regenerated peripheral nerve fibers and that Na(v)1.6 sodium channel, which is the dominant sodium channel at normal nodes, is reconstituted on the regenerated axons. FAU - Radtke, Christine AU - Radtke C AD - Department of Neurology, LCI 7, P.O. Box 208018, Yale University School of Medicine, New Haven, CT 06516, USA. FAU - Akiyama, Yukinori AU - Akiyama Y FAU - Lankford, Karen L AU - Lankford KL FAU - Vogt, Peter M AU - Vogt PM FAU - Krause, Diane S AU - Krause DS FAU - Kocsis, Jeffery D AU - Kocsis JD LA - eng GR - R01 NS043432/NS/NINDS NIH HHS/United States GR - R01 NS043432-05/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Cell Adhesion Molecules, Neuronal) RN - 0 (Cntnap1 protein, mouse) RN - 0 (NAV1.6 Voltage-Gated Sodium Channel) RN - 0 (Nerve Tissue Proteins) RN - 0 (Scn8a protein, mouse) RN - 0 (Sodium Channels) RN - 147336-22-9 (Green Fluorescent Proteins) SB - IM MH - Animals MH - Axotomy MH - Cell Adhesion Molecules, Neuronal/metabolism MH - Cell Compartmentation/physiology MH - Cytoplasm/metabolism/ultrastructure MH - Disease Models, Animal MH - Female MH - Green Fluorescent Proteins/metabolism MH - Immunohistochemistry MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Microscopy, Electron, Transmission MH - Myelin Sheath/*physiology/ultrastructure MH - NAV1.6 Voltage-Gated Sodium Channel MH - Nerve Regeneration/*physiology MH - Nerve Tissue Proteins/metabolism MH - *Peripheral Nerve Injuries MH - Peripheral Nerves/surgery/ultrastructure MH - Ranvier's Nodes/*physiology/ultrastructure MH - Schwann Cells/physiology/*transplantation/ultrastructure MH - Sciatic Neuropathy/metabolism/physiopathology/*therapy MH - Sodium Channels/metabolism MH - Y Chromosome/genetics/metabolism PMC - PMC2605373 MID - NIHMS80442 EDAT- 2005/08/09 09:00 MHDA- 2005/10/22 09:00 PMCR- 2008/12/18 CRDT- 2005/08/09 09:00 PHST- 2005/01/18 00:00 [received] PHST- 2005/06/21 00:00 [revised] PHST- 2005/06/24 00:00 [accepted] PHST- 2005/08/09 09:00 [pubmed] PHST- 2005/10/22 09:00 [medline] PHST- 2005/08/09 09:00 [entrez] PHST- 2008/12/18 00:00 [pmc-release] AID - S0304-3940(05)00760-3 [pii] AID - 10.1016/j.neulet.2005.06.073 [doi] PST - ppublish SO - Neurosci Lett. 2005 Oct 21;387(2):85-9. doi: 10.1016/j.neulet.2005.06.073.